Paper Info
Title
Secure logarithmic audio watermarking scheme based on the human auditory system
Abstract
This paper proposes a high capacity audio watermarking algorithm in the logarithm domain based on the absolute threshold of hearing of the human auditory system (HAS), which makes this scheme a novel technique. When considering the fact that the human ear requires more precise samples at low amplitudes (soft sounds), the use of the logarithm helps us design a logarithmic quantization algorithm. The key idea is to divide the selected frequency band into short frames and quantize the samples based on the HAS. Using frames and the HAS improves the robustness, since embedding a secret bit into a set of samples is more reliable than embedding it into a single sample. In addition, the quantization level is adjusted according to the HAS. Apart from remarkable capacity, transparency and robustness, this scheme provides three parameters (frequency band, scale factor and frame size) which facilitate the regulation of the watermarking properties. The experimental results show that the method has a high capacity (800---7,000 bits per second), without significant perceptual distortion (ODG >1) and provides robustness against common audio signal processing such as added noise, filtering and MPEG compression (MP3).
Year
DOI
Venue
2014
10.1007/s00530-013-0325-1
Multimedia Systems
Keywords
Field
DocType
Audio watermarking, Multimedia security, Digital rights management
Digital watermarking,Embedding,Computer science,Frequency band,Algorithm,Filter (signal processing),Real-time computing,Robustness (computer science),Speech recognition,Logarithm,Quantization (signal processing),Audio signal processing
Journal
Volume
Issue
ISSN
20
2
1432-1882
Citations 
PageRank 
References 
3
0.40
18
Authors
2
Name
Order
Citations
PageRank
Mehdi Fallahpour120312.12
David Megías220524.13